Spring articulated suspension device with three degrees of freedom and the positioning device

摘要

Suspension system (10) comprising a flat spring member (11) having four legs (11.1 - 11.4). The legs (11.1 - 11.4) are symmetrically arranged with respect to the center position (13) of the spring member (11) and each of the legs (11.1 - 11.4) has a longitudinal axis and an end portion. A suspension frame (12) is provided to support the spring member (11) by fixing the end portion of two legs (11.2, 11.3). Two preload elements (15.1; 15.2) are arranged close to the end portions of two of the legs (11.1, 11.4) in a manner to apply a preloading force (F) at those legs (11.1, 11.4). The preloading force (F) essentially points in the direction of the longitudinal axis.